\documentclass[12pt,a4]{article}

\input{preamble}

\setcounter{section}{5}



\begin{itemize}
 \item Monday, 2018-04-02, homework handed out
 \item Sunday, 2018-04-08, 12:00: submit questions and first submissions. You'll get feedback
 until Wednesday.
 \item 2018-04-15: submit final solution.
\end{itemize}



\section{Graph}



\input{Ex6-1}
\input{Ex6-2}
\newpage
\input{Ex6-3}
\input{Ex6-4}
\input{Ex6_5-6}



\end{document}
